Cultivator



June 4, 1929. o MODOLELL 1,715,467

GULTIVATOR Filed Oct. 17, 1927 FIG. 1

J 0. Mada/e Patented June 4. 1929.

atmivntivnnes MoDoLELL, or mm -sgmmg fl c L'rIvAToR. i i

Application filed October 1 7, 1827,.Seria1 N0. 226,764, and in GreatBritain Qetober particularlyof the expanding kind formed by anapproximately triangular frame with a 5 vertex'directed forward,v thebase of which is formed by curved concentric sectors which V areadpl-stably secured to a central frame memberof the machinefitssidesforming the arms to whiclithe sectors are pivoted and to which arms thelateral tool holders of the. 4

' i the machine is mounted the handle-3.

machine are mounted. Theinvention consists in a cultivating ma-. chineof the above type wherein the 'saijdarms are provided at their free endswith a head of suitable form in each of which heads ispivotally mountedone of the said sectors which is guided in the headof the opposite arm.

' Another feature of'the machine is that it is so constructed that itmay bepulled along by by means of a pair of shafts which are pivotallyattached to a forwardly projecting central beamof the machine sothat no.fore carriage is necessary, the depth of the cut or means of a screwadjustment between the said shafts and the said central beam of the ma-I chine.

Further features of the invention are hereinafter fully described andclaimed in the appended claims. r

The machine constructed in accordance with this invention hastheadvantage that.

' Moreover, as the two lateraltool carrying arms of the machine areindependent of each 7 other, they may be given each a different separation from the body of the machine, according tothe requirements of thework to be done.

The machine is so constructed that the breadth of the, machine may be.reduced considerablywithout presenting any projections on its sides andin this Way it can be employed for work between narrow lines 1 ofplants.

a single horsewhich is yokedto the machine work of the machine beingregulated by In the accompanying drawing is illustrated practicalembodiment of theLmachineac cording to the invention; I g i F gure 1 1saside view of the machine As" shown in the drawing, 2thi '-s' machinecomprises a frame "l'of metal or other material'and of suit-able form,which at its front Figure 2 is'a plan view of themachine,"

partrcompris'es a forwardly projectingjcem' 1 tral beam 2' having a hole20 for attachment 5 of thedra'ft means while at thejback part: of At thefront part of the body 1 i disposed atool carrying ember whichisindepend @117? mfileiof he ac i and. whic is attached to the "frame.at its upper part by V meansof a pin 5of polygonalcross section, inorder to" prevent the rotation'of the in'emher, and at the lowerpa-r't'ofthesaidmember here is f rm da r ess to whi h. ent r aprojection 6 provided upon-the frame'l.

h m b lrte hi h' is t he th suited to the class'of'Wo -k which it isdesired to do with the machine, is prov-ided, at I -upper par and n o l'sides of t e f a e these arms ar E f' M 1 81 f rm's'yb free end, ahead11 to which'i s pivotally joined a sector 12 andthesa'id sectors,whichar e 0on centrically superposed on each other, are guided in' thehead of the opposite arm to the one to which they are jointed and attiresame time in a clamp 13 by means ofwhilch tl' ey' are fixed through themediumof a screw 14..

- T e c amp 1 f rms a membe hi ce prises, in addition, abackqplate l5:and the lateral arms or guide brackets 16 for receiving the sectors '12,the lower support '17,.secured to'the frame 1, and an extension 18 onwhich is mounted in a desired manner a suitable tool holder. H p

Moreover, the said member is strengthened. by means of stays 19. L

dependent of each other sectors of diflferenth length maybe employed inthis way, and in .100, Asthe sectors 12 and the arms 10 are-inno case,however small be the width of the machine, will the free ends of thesectors project from the, sides of the same, since in each case theywill be employed of'a suitable length or else they may be jointed andtfurnedibaclc i on both sides of the machine. I y

With a View to making this machine trans;

1, with lugs 8 inwhichj by meinsofpi'ns 9, 3 are pi ota y mount he aniisUp mounted a t alsuitable point the necessary tool carrying supports. Ii

' means of its I regardsits dimensions and theshapesot its accessoryparts, detailsof construction of its component parts, and the materialsof which the same are made, without-'onthat "account nature ofthe same.

formable, in order to facilitate handling of it and the changing of then'ecessaryparts in of spanners or other tools, 7 I

r In order to employthe machine asa plough, the parts 4 and 10are'detached, together with the sectors and clamp 13 and ploughing toolsmeans of a pin of polygonal CI'OSS-SGCtlOD'tO the frame of the machineuponwhich front are attached to the frame 1. r Y The. machine descr bedmay be modified as changing, altering or modifying theessential Havingnow described my invention, what I claim as new and des re to secure byLetters Patent 1s 1. An expanding cultlvating machine of I the'kin'dformed by an approximately 'trian- ,gular frame, with a vertex directedtorward 'the baseof whlch is formed bycurved con-- centr c SGC-tQIsWhlchare adplstably secured to a central frame member of themachine, itssldesformlngthe lateral arms to which the sectors are plvoted and inwhich arms the v lateral tool holders of the machine are mounted,wherein the saidarms are provided at their free'ends with a head ofsuitable form in each of which heads is pivotally mounted one ofthe saidsectors which is guided inthe head of the opposite arm,

said front member is secured at its upper part by means of apin ofpolygonal cross Sec' tion while at its lower part there is formed arecess into which enters a pro ect1on provided upon the frame roper.

,3. An expanding cultivatingmachine of the kind formedby anapproximately t riangular frame With a vertex directed forward,

thebase of which is formed by curved concentric sectors which areadjustably secured to a central irame member, its sides forming thelateral arms to which the sectors are pivoted and on which arms thelateral tool, h0lders of the machlne are'mounted, comprising;-

a head on the free'ends of each of said arms,

a sector pivotally mounted in each of said heads, which heads areadapted to guide the sector of the opposite head, a front memberdetachably' secured at the upper, part, by

member theflateral arms ar efpiv'oted and upon which a forward toolissecured,while V at thelower part of the said front member a recess isprovided which'is adaptcdto receive a, pro ect on provided upon theframe, at detachable combined guide bracket and clamp forfthe sectors,said guide bracket consisting of a back plate, two lateral brackets forsaid sectors, one, central bracket in which means-for securing the saidguide bracket'to the framea'nd a projection adaptedto roethe sectors arefiXe'dQby me'ans of a screw, v

gular framedwith a vertexdirected forward,

the base of which is formed by c'urvedfcon centric sectors which areadjustably secured "to a central frame member its sidestorming I thelateral arms to which the sectors are pivoted and on whicharms thelateral to'o'l'hold- 'ers'of the machine are mounted, comprising a headon the tree endsot each, of said arms,

a sector pivotally mounted in each ofsaid heads, which heads are adaptedto guidethe' sector otthe opposite head, a detacliably combined 'guide'bracket and clamp for the sectors, said gulde bracket consistingotafback-plate, two lateral'brack'ets for said sectors,"means forsecuring'said guide bracket to the frame and'a projection adapted to receive atool holder to the rear of said guide bracket.

In testimony whereof I have my name to this s ecification.

JUAN ALIVEERAS 'MonoLELL.

